9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHSteering whell vibration @ 70-75 mph
Leading reported evidence
Check balance
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that contain suggestions
1
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Suggestion
Yup, check the balance, but before that, Look CLOSELY at the tire tread to see if there is A cupping wear pattern.
Leading evidence: 'Check balance' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check balance' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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1
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Suggestion
If it is speed related and gets worse as speed goes faster check the balancing of the wheel.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion
Check wheel wieghts, lug nuts and for good measures have the tires rebalanced.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion
If this is the problem, replace the tires when you get the alignment done as nothing else will make the now funky tires roll smoothly.....
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
When balancing didn't help, new Conti's (in place of Pirelli's) did.
I have an '01 996 with 9k miles which I got new in 8/02. The steering wheel will vibrate at around 70-75 mph and I thought it was the straight grooves in the pavement (damm 8 freeway in San Diego). But I am noticing that it is also present in non-grooved asphalt. Is this a balancing problem or an alignment problem and who do you recommend to resolve it: dealer or indep. I have read here that the 996's settings need to be readjusted after the suspension has had a chance to settle after break in. Comments and suggestions will be highly appreciated.
If it is speed related and gets worse as speed goes faster check the balancing of the wheel. Sometimes losers try and peel off your wheel weights if they're jealous.
Yup, check the balance, but before that, Look CLOSELY at the tire tread to see if there is A cupping wear pattern. After 9000 miles it will be there even if the alignment is only slightly off. If this is the problem, replace the tires when you get the alignment done as nothing else will make the now funky tires roll smoothly.....
If it buzzes the wheel in one narrow speed range and then clears up, probably balance.
If it is when you first tip into the brakes at that speed, probably warped rotors. You don't mention braking, so just FYI.
If it is also noisy at low speeds (something like the sound of a bad u-joint) could be cupped tires. You can feel this by running your hand quickly around the tread. Very common for Contis to do this, could be alignment related. I had this. You are under warranty, insist on free dealer alignment.
If they are out-of-round from belts you might try hitting up the tire manufacturer or Porsche for an allowance. That is a defect.
Apart from shaking a weight, most of these lead to alignment check and four new tires. Good excuse to swap into something gummier.
Do not fail to check the air pressure first....but it sounds like a balance issue and or the tyres....I had the same issue with my '00 C4 Millennium and I ended up putting on new tyres front and back...drove on them a few hundred miles and had the balance checked again
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